From: Lokesh Vutla Subject: [PATCH] crypto: omap-sham: Use pm_runtime_irq_safe() Date: Tue, 31 Mar 2015 09:52:24 +0530 Message-ID: <1427775745-4674-2-git-send-email-lokeshvutla@ti.com> References: <1427775745-4674-1-git-send-email-lokeshvutla@ti.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , To: , Return-path: In-Reply-To: <1427775745-4674-1-git-send-email-lokeshvutla@ti.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org omap_sham_handle_queue() can be called as part of done_task tasklet. During this its atomic and any calls to pm functions cannot sleep. But there is a call to pm_runtime_get_sync() (which can sleep) in omap_sham_handle_queue(), because of which the following appears: " [ 116.169969] BUG: scheduling while atomic: kworker/0:2/2676/0x00000100" Add pm_runtime_irq_safe() to avoid this. Signed-off-by: Lokesh Vutla --- drivers/crypto/omap-sham.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index ace5852..81ed511 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -1949,6 +1949,7 @@ static int omap_sham_probe(struct platform_device *pdev) dd->flags |= dd->pdata->flags; pm_runtime_enable(dev); + pm_runtime_irq_safe(dev); pm_runtime_get_sync(dev); rev = omap_sham_read(dd, SHA_REG_REV(dd)); pm_runtime_put_sync(&pdev->dev); -- 1.9.1